Grewia retusifolia is a shrub species in the family Malvaceae.

Common names include dysentery bush, emu-berry, dog's balls, turkey bush and diddle diddle.

[5] The species produces small, sweet, two-lobed fruit with a fibrous acidic pulp surrounding the seeds.

Leichhardt described the fruits as having a very agreeable taste, which could be boiled to make a refreshing drink.

[5] Indigenous Australians use the bark and leaves in medications.